The goal of Standard 189.1 is to provide significant energy reduction over that in ANSI/ASHRAE/IESNA Standard 90.1-2007 (with a broader scope than Standard 90.1)and suggest minimum requirements for the siting, design, and construction of high performance, green buildings.
Requirements to “lighten up” energy use and costs through fenestration, parking lot lighting, and other proposed measures are being recommended for Standard 90.1.